WO2006082528A2 - Method and apparatus for transmission of user identities in a ip multimedia subsystem - Google Patents

Method and apparatus for transmission of user identities in a ip multimedia subsystem Download PDF

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Publication number
WO2006082528A2
WO2006082528A2 PCT/IB2006/000726 IB2006000726W WO2006082528A2 WO 2006082528 A2 WO2006082528 A2 WO 2006082528A2 IB 2006000726 W IB2006000726 W IB 2006000726W WO 2006082528 A2 WO2006082528 A2 WO 2006082528A2
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WO
WIPO (PCT)
Prior art keywords
user identity
message
private user
subscription
entity
Prior art date
Application number
PCT/IB2006/000726
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English (en)
French (fr)
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WO2006082528A3 (en
Inventor
Kalle Tammi
Mikko Aittola
Minna Myllymaki
Anu H. Leinonen
Original Assignee
Nokia Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nokia Corporation filed Critical Nokia Corporation
Priority to AU2006211050A priority Critical patent/AU2006211050B2/en
Priority to JP2007551768A priority patent/JP4550905B2/ja
Priority to ES06710601T priority patent/ES2773027T3/es
Priority to EP06710601.3A priority patent/EP1844594B1/de
Priority to KR1020077018951A priority patent/KR100909533B1/ko
Priority to CN2006800039166A priority patent/CN101112067B/zh
Publication of WO2006082528A2 publication Critical patent/WO2006082528A2/en
Publication of WO2006082528A3 publication Critical patent/WO2006082528A3/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/10—Network architectures or network communication protocols for network security for controlling access to devices or network resources
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066—Session management
    • H04L65/1073—Registration or de-registration
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/2866—Architectures; Arrangements
    • H04L67/30—Profiles
    • H04L67/306—User profiles
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/18—Information format or content conversion, e.g. adaptation by the network of the transmitted or received information for the purpose of wireless delivery to users or terminals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
    • H04L63/0407—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the identity of one or more communicating identities is hidden
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/10—Architectures or entities
    • H04L65/1016—IP multimedia subsystem [IMS]

Definitions

  • This invention relates to the registration of user identities in a communications system.
  • FIG. 1 shows part of the architecture of the 3GPP system, including the IP Multimedia Subsystem (IMS) 1.
  • the IMS includes a serving call session control function (S-CSCF) 2 which can communicate with a home subscriber server (HSS) 3 over a Cx-type interface.
  • S-CSCF serving call session control function
  • HSS home subscriber server
  • the system also includes one or more connection entities 4 such as packet switched domains or P-CSCFs by means of which the IMS 1 can communicate with user entities 5 such as mobile phones.
  • the interface 6 between the S-CSCF 2 and the HSS 3 is a Cx-type interface, whose characteristics are tightly specified.
  • the S-CSCF provides services to the user entities and the HSS stores information on subscriptions which can be accessed by the S- CSCF and stored by it in a local database 7 for assisting the provision of services to users under that subscription.
  • the current specification for 3GPP Rel-6 TS 23.228 (version 6.7.0, chapter 4.3.3.4 figure 4.6) defines the IMS subscription, which may consist of multiple private user identities.
  • the private user identities may be paired with dedicated or shared public user identities.
  • the public user identity - private user identity pair is registered explicitly and it is assumed that the S-CSCF will find out about the pairing of a subscription's private user identities with the help of shared public user identity/identities when such are registered. In some situations this can work satisfactorily.
  • the private user identities may have also dedicated public user identities, which may be registered independently of the shared public user identities. It has been identified that when this happens under the current design the S-CSCF has no means of finding out that parings of a registered public user identity with a private user identity belong to the same IMS subscription.
  • WO 2004/000089 addresses problems associated with an HSS linking multiple user identities to the same subscriber. Such identities must be registered at the same S-CSCF and accordingly the HSS does not give server capabilities for the second and further registrations, but instead gives the name of the already used S-CSCF.
  • a method for assisting the registration of subscription characteristics in a communications system in which a private user identity characteristic can be paired with a public user identity characteristic and more than one private user identity may be associated with a subscription; the method comprising transmitting from a subscription information store entity of the system to a service provision entity of the system a first message containing data specifying characteristics of a pairing of a first private user identity and a public user identity, the message also including an indication of any further private user identities other than the first private user identity that are associated with the same subscription as the first private user identity.
  • figure 1 shows a communications system.
  • this example of the present invention involves the introduction of a new attribute to the Cx interface.
  • This attribute has features that allow it to support IMS subscriptions with multiple private user identities.
  • a new attribute is added to the Cx interface.
  • This attribute is referred to herein as an Associated-Identities attribute.
  • the attribute is capable of carrying sufficient information to inform as S-CSCF of private identities of the IMS subscription to the S-CSCF during the registration of a private user identity - public identity pair and when a new private user identity is added into the subscription.
  • the S-CSCF retrieves the authentication data and user data related to the identity pair from the HSS via the Cx interface.
  • the commands used for this is are Multimedia-Auth-Request (MAR) and Server-Assignment-Request (SAR).
  • MAR Multimedia-Auth-Request
  • SAR Server-Assignment-Request
  • the HSS returns the authentication data in the Multimedia-Auth-Answer (MAA) and the user data in the Server-Assignment-Answer (SAA) message.
  • MAA Multimedia-Auth-Answer
  • SAA Server-Assignment-Answer
  • the HSS adds a list of the subscription's other private user identities into the SAA. To do this it uses the Associated-Identities attribute-value pair (AVP).
  • AVP Associated-Identities attribute-value pair
  • the Associated-Identities AVP is known by the units that use the Cx interface as containing a list of User-Name AVPs, which each contain a private user identity.
  • the SAA message is defined as follows:
  • Session-Id > ⁇ Vendor-Specific-Application-ld ⁇ [ Result-Code ] [Experimental-Result ] ⁇ Auth-Session-State ⁇ ⁇ Origin-Host ⁇ ⁇ Origin-Realm ⁇ [ User-Name ] *[ Supported-Features ] [ User-Data ] [ Charging-lnformation ] *[ Proxy-Info ] *[ Route-Record ] [ Associated-Identities ] * [ AVP ]
  • xxx indicates a number, which can be selected to comply with the requirements of the system.
  • the S-CSCF Based on the associated private user identities that it receives the S-CSCF is able to learn the IMS subscription's private user identities before carrying out further actions, and pre-store them into its database.
  • the HSS informs the S-CSCF by sending a Push-Profile-Request (PPR) to the S-CSCF.
  • PPR contains as a key any of the private user identities that the S-CSCF already posses and the updated list of the associated private user identities in the Associated-Identities AVP.
  • the AVP contains also the new private user identity.
  • the S-CSCF identifies that it does so and stores the new identity in its database.
  • the format of the push-profile request message is as follows:
  • Push-Profile-Request > :: ⁇ Diameter Header: 305, REQ, PXY, 16777216 >
  • the HSS utilises a Registration-Termination-Request (RTR) message to inform the S-CSCF.
  • RTR Registration-Termination-Request
  • the basis of a message is currently specified in the 3GPP standards.
  • the RTR may contain only one private identity (i.e. User-Name AVP) at a time.
  • the present inventors have identified that the efficiency with which the RTR message is used may be improved by additionally including the Associated- Identities AVP in the RTR command.
  • Vendor-Specific-Application-Id ⁇ Auth-Session-State ⁇ ⁇ Origin-Host ⁇ ⁇ Origin-Realm ⁇ ⁇ Destination-Host ⁇ ⁇ Destination-Realm ⁇ ⁇ User-Name ⁇ *[ Supported-Features ] *[ Public-Identity ] ⁇ Deregistration-Reason ⁇ [ Associated-Identities ] *[ Proxy-Info ] *[ Route-Record ] *[ AVP ]
  • This procedure is used between the S-CSCF and the HSS.
  • the procedure is invoked by the S-CSCF, corresponds to the combination of the operations Cx-Put and Cx-PuII (see 3GPP TS 23.228 [1]) and is used:
  • the S-CSCF On registering/deregistering a Public User Identity the S-CSCF shall inform the HSS. The same procedure is used by the S-CSCF to get the user information which contains the user profile and the charging information. The relevant user profile downloaded is described in more detailed in sections 6.5.1 and 6.6.
  • the HSS holds information about the state of registration of all the identities of the user. The S-CSCF uses this procedure to update such states. For implicitly registered identities, the rules defined in Section 6.5.1 shall apply.
  • the HSS shall, in the following order (in case of an error in any of the steps the HSS shall stop processing and return the corresponding error code, see 3GPP TS 29.229 [5]):
  • Experimental-Result-Code shall be set to DIAMETER_ERROR_USER_UNKNOWN. If there is neither a Public User Identity nor a Private User Identity included, the Experimental-Result-Code shall be set to DIAMETER_MISSINGJJSER_ID.
  • the HSS may check whether the Private and Public User Identities received in the request belong to the same user. If not Experimental-Result-Code shall be set to DIAMETER_ERRORJDENTITIES_DONT_MATCH.
  • the HSS shall download the relevant user information. . If the Public User Identity's authentication pending flag which is specific for the Private User Identity is set, the HSS shall clear it. The Result-Code shall be set to DIAMETER_SUCCESS and the HSS shall set the registration state of the Public User Identity as registered (if not already registered). If there are multiple private user identities, which belong to the served IMS subscription, the Associated-Identities AVP shall be added to the answer message and it shall contain all private user identities associated to the IMS subscription.
  • the Result-Code shall be set to DIAMETER_AVP_OCCURS_TOO_MANY_TIMES and no user information shall be returned. If there is no Public User Identity present, the Experimental-Result-Code shall be set to DIAMETERJvlISSINGJJSERJD.
  • the HSS shall store the S-CSCF name, set the registration state of the Public User Identity as unregistered, i.e. registered as a consequence of a terminating call and download the relevant user information. If there are multiple Private User Identities associated to the Public User Identity in the HSS, the HSS shall arbitrarily select one of the Private User Identities and put it into the response message. The Result-Code shall be set to DIAMETER_SUCCESS. If there are multiple private user identities, which belong to the served IMS subscription, the Associated-Identities AVP shall be added to the answer message and it shall contain all private user identities associated to the IMS subscription.
  • the Result-Code shall be set to DIAMETER_AVP_OCCURS_TOO_MANY_TIMES and the modifications specified in the previous paragraph shall not be performed. If there is no Public User Identity present, the Experimental-Result-Code shall be set to DIAMETER_MISSINGJJSERJD.
  • the HSS shall clear the S-CSCF name associated to the Private User Identity for all the Public User Identities that the S-CSCF indicated in the request and set the registration state of the identities as not registered. If no Public User Identity is present in the request, the Private User Identity shall be present; in this case the HSS shall clear the S-CSCF name for all the Public User Identities associated to the Private User Identity and set their registration state to not registered.
  • the Result-Code shall be set to DIAMETER_SUCCESS.
  • the HSS decides whether to keep the S-CSCF name associated to the Private User Identity stored or not for all the Public User Identities that the S- CSCF indicated in the request. If no Public User Identity is present in the request, the Private User Identity shall be present. If the HSS decides to keep the S-CSCF name stored the HSS shall keeps the S-CSCF name stored for all the Public User Identities associated to the Private User Identity and set their registration state to unregistered.
  • the Result-Code shall be set to DIAMETER_SUCCESS.
  • DIAMETER_SUCCESS_SERVER_NAME_NOT_STORED If the HSS received Public User Identities in the request, the HSS shall set the registration state to not registered for the Public User Identity (ies) that the S-CSCF indicated in the request. If the HSS received a Private User Identity in the request, the HSS shall set the registration state of all Public User Identities related to the private identity to not registered.
  • the HSS checks whether the user is assigned for the S-CSCF requesting the data and download the relevant user information.
  • the Result-Code shall be set to
  • DIAMETER_SUCCESS If there are multiple private user identities, which belong to the served IMS subscription, the Associated-Identities AVP shall be added to the answer message and it shall contain all private user identities associated to the IMS subscription.
  • the Result-Code shall be set to DIAMETER_UNABLE_TO COMPLY.
  • the Result-Code shall be set to DIAMETER_AVP_OCCURS_TOO_MANY_TIMES and no user information shall be returned. If there is no Public User Identity present, the Experimental-Result-Code shall be set to DIAMETER_MISSING_USER_ID.
  • the HSS shall clear the S-CSCF name for the Public User Identity associated to the Private User Identity that the S- CSCF indicated in the request and set the registration state of the identity as not registered. If the Public User Identity's authentication pending flag which is specific for the Private User Identity is set, the HSS shall clear it.
  • the Result-Code shall be set to DIAMETER_SUCCESS.
  • the Result-Code shall be set to DIAMETER_AVP_OCCURS_TOO_MANY_TIMES and the modifications specified in the previous paragraph shall not be performed. If there is no Public User Identity present, the Experimental-Result-Code shall be set to DIAMETER_MISSING_USER_ID.
  • the HSS shall set the Result-Code to DIAMETER_UNABLE_TO_COMPLY.
  • the HSS shall not modify any user state nor download any user Public User Identity information to the S-CSCF.
  • This procedure is used between the S-CSCF and the HSS to exchange information to support the authentication between the end user and the home IMS network.
  • the procedure is invoked by the S-CSCF, corresponds to the combination of the operations Cx-AV-Req and Cx-Put (see 3GPP TS 33.203 [3]) and is used:
  • Integrity Integrity- M This information element shall contain the integrity
  • Key Key key It shall be binary encoded.
  • the HSS shall, in the following order (in case of an error in any of the steps the HSS shall stop processing and return the corresponding error code, see 3GPP TS 29.229 [5]):
  • the HSS may check that the private and public identities belong to the same user. If not Experimental-Result-Code shall be set to DIAMETER_ERRORJDENTITIES_DONT_MATCH.
  • the HSS shall compare the S-CSCF name received in the request to the S-CSCF name stored in the HSS:
  • the HSS shall process AUTS as described in 3GPP TS 33.203 [3] and return the requested authentication information.
  • the Result-Code shall be set to DIAMETER_SUCCESS.
  • the HSS shall compare the S-CSCF name received in the request to the S-CSCF name stored in the HSS:
  • the HSS shall store the S-CSCF name.
  • the HSS shall download Authentication-Data-Item stored up to a maximum specified in SIP-Number-Auth-ltems received in the command Multimedia-Auth-Request.
  • the HSS shall set the public identity's authentication pending flag which is specific to the private identity which was received in the request.
  • the Result-Code shall be set to DIAMETER_SUCCESS.
  • the HSS shall download Authentication-Data-ltem stored up to a maximum specified in SIP-Number-Auth-ltems received in the command Multimedia-Auth-Request.
  • the Result-Code shall be set to DIAMETER_SUCCESS.
  • the HSS shall compare the S-CSCF name received in the request to the S-CSCF name stored in the HSS:
  • the HSS shall store the S-CSCF name.
  • the HSS shall download Authentication-Data-Item stored up to a maximum specified in SIP-Number-Auth-ltems received in the command Multimedia-Auth-Request.
  • the HSS shall set the public identity's authentication pending flag which is specific to the private identity which was received in the request.
  • the Result-Code shall be set to DIAMETER_SUCCESS.
  • the HSS shall download Authentication-Data-Item stored up to a maximum specified in SIP-Number-Auth-ltems received in the command Multimedia-Auth-Request.
  • the HSS shall set the public identity's authentication pending flag which is specific to the private identity that was received in the request.
  • the Result-Code shall be set to DIAMETER_SUCCESS.
  • the HSS shall store the S-CSCF name.
  • the HSS shall download Authentication-Data-Item stored up to a maximum specified in SIP-Number-Auth-ltems received in the command Multimedia-Auth-Request.
  • the HSS shall set the public identity's authentication pending flag which is specific to the private identity that was received in the request.
  • the Result-Code shall be set to DIAMETER_SUCCESS.
  • the Associated-Identities AVP shall be added to the answer message and it shall contain all private user identities associated to the IMS subscription.
  • the Result-Code shall be set to DIAMETER_UNABLE_TO_COMPLY. No authentication information shall be returned.
  • This associated private identities information element indicates to the S-CSCF the private user identities, which belong to the same IMS subscription. See 3GPP TS 29.229 [5].
  • SAA Server-Assignment-Answer
  • the Server-Assignment-Answer (SAA) command is sent by a server in response to the Server-Assignment-Request command.
  • the Result- Code or Experimental-Result AVP may contain one of the values defined in section 6.2 in addition to the values defined in IETF RFC 3588 [6]. If Result-Code or Experimental-Result does not inform about an error, the User-Data AVP shall contain the information that the S-CSCF needs to give service to the user. Message Format
  • Multimedia-Auth-Answer (MAA) Command suitable for implementing the features described above in the 3GPP system.
  • the Multimedia-Auth-Answer (MAA) command is sent by a server in response to the Multimedia-Auth-Request command.
  • the Result-Code or Experimental-Result AVP may contain one of the values defined in section 6.2 in addition to the values defined in IETF RFC 3588 [6]. Message Format
  • Multimedia-Auth-Answer > :: ⁇ Diameter Header: 303, PXY, 16777216 >
  • the following table describes the Diameter AVPs defined for the Cx interface protocol, their AVP Code values, types, possible flag values and whether or not the AVP may be encrypted.
  • the Vendor-Id header of all AVPs defined in this specification shall be set to 3GPP (10415).
  • the Associated-Identities AVP is of type Grouped and it contains the private user identities associated to an IMS subscription.
  • AVP format Associated-Identities :: ⁇ AVP header: 632 10415>
  • the present invention is applicable in systems other than the present 3G communications system.
  • a service-providing entity e.g. an S-CSCF
  • the ability to inform a service-providing entity is useful in a wide range of systems. It is particularly advantageous to achieve this by means of the same message as is used to inform the service-providing entity of information regarding a primary identity pair (e.g. a SAR message and/or a PPR message).
  • a primary identity pair e.g. a SAR message and/or a PPR message
  • it is also advantageous to be able to trigger the deletion of multiple parings through a single message e.g. an RTR message).

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Hardware Design (AREA)
  • Computer Security & Cryptography (AREA)
  • Computing Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Business, Economics & Management (AREA)
  • General Business, Economics & Management (AREA)
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PCT/IB2006/000726 2005-02-04 2006-01-31 Method and apparatus for transmission of user identities in a ip multimedia subsystem WO2006082528A2 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
AU2006211050A AU2006211050B2 (en) 2005-02-04 2006-01-31 Method and apparatus for transmission of user identities in a IP Multimedia Subsystem
JP2007551768A JP4550905B2 (ja) 2005-02-04 2006-01-31 ユーザアイデンティティ
ES06710601T ES2773027T3 (es) 2005-02-04 2006-01-31 Método y aparatos para la transmisión de identidades de usuario en un subsistema multimedia IP
EP06710601.3A EP1844594B1 (de) 2005-02-04 2006-01-31 Verfahren und vorrichtungen zur übertragung von benutzeridentitäten in einem ip-multimedia-subsystem
KR1020077018951A KR100909533B1 (ko) 2005-02-04 2006-01-31 사용자 아이덴티티들
CN2006800039166A CN101112067B (zh) 2005-02-04 2006-01-31 在ip多媒体子系统中用于传送用户身份的方法和装置

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GB0502383.3 2005-02-04
GBGB0502383.3A GB0502383D0 (en) 2005-02-04 2005-02-04 User identities

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WO2006082528A3 WO2006082528A3 (en) 2006-09-21

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US (1) US7567796B2 (de)
EP (1) EP1844594B1 (de)
JP (1) JP4550905B2 (de)
KR (1) KR100909533B1 (de)
CN (1) CN101112067B (de)
AU (1) AU2006211050B2 (de)
ES (1) ES2773027T3 (de)
GB (1) GB0502383D0 (de)
MY (1) MY155021A (de)
TW (1) TWI403138B (de)
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ES2773027T3 (es) 2020-07-09
GB0502383D0 (en) 2005-03-16
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TW200642396A (en) 2006-12-01
CN101112067A (zh) 2008-01-23
US7567796B2 (en) 2009-07-28
CN101112067B (zh) 2011-09-14
AU2006211050B2 (en) 2010-04-22
US20060178132A1 (en) 2006-08-10
AU2006211050A1 (en) 2006-08-10
JP2008529331A (ja) 2008-07-31
KR20070100802A (ko) 2007-10-11
MY155021A (en) 2015-08-28
JP4550905B2 (ja) 2010-09-22

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